There are
2,105 mi
from Markham, IL to Gresham, OR
That's the driving distance. It would take 1 day 12 hours to go from Markham, Illinois to Gresham, Oregon.
The flight distance (direct flight from Markham, IL to Gresham, OR) is 1,746.39 mi.
2,105 mi = 3,388.26 kms